[vorbis] bassrumble still there at 96kbps and below

[Moritz Grimm]

Hi again,

shortly after beta 4 came out i noticed that rumbling artifact oggenc
puts into a certain tune of mine. Back then, it was even audible at an
ABR of 350kbps.

Now with RC2 that bug is completely gone at bitrates of 128kbps and
higher. I can hear it again at 96kbps and it becomes more apparent with
lower bitrates. At 64kbps, I assume, everybody should be able to hear
it.

This is not a stereo related artifact that has been introduced by the
lossy channle coupling, because encoding a mono version of the clip
doesn't make it go away.

I deleted the old bassrumble demo on my university account. The new demo
can now be found at
ftp://instinct.student.utwente.nl/pub/groups/kolabore/ogg/ - the .WAV
clip is smaller and instead of a 350kbps demo it contains one encoded
with -b 64 and even a LAME encoded MP3 at the same average bitrate.
Check out the .txt for more info and some opinions. Depending on what
you prefer, I even put two identical archives (rar and a tarball) there.

Moritz

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